Collapsible or folding ski



Nov. 1o, 1931.. SQLVESTR 1,831,326

COLLAPSIBLE OR FOLDNG SKI Filed sept. i4, 1929 Patented Nov. 1o, 1931 v Y j 1,831,326

UNITED STATES vPATENT oFFicE ENRICO SILVESTRI, or MILAN, ITALY coLLArsiBLE on FOLDING SKI, Application led September 14, 1929, Serial No. 392,652, and in Italy September 17 1928.

The present invention relates to a ski type therein which-engage an iron clamp secured consisting of two halves hinged to one anto the shoe. l other in such a manner that one half can be The upper face of the other vski half l is folded over the other when the ski is not to fitted with a metal plate 8 having at its forbe used, whereas theyarel fixed vand locked ward end ahollow cross groove 9'in order on the extension of oneanothers longitudito conform to the member 4 and form the nal axis when the ski is in use. other half of the hinge coupling.l

The accompanying drawings illustrate The two ski halves 1 andvl are connected twok execution forms (by way of example with one another by two side links 10 pivonly) of the collapsible ski according to the otally secured at 11 to the upwardly directed 50' invention. y I wings 12 of the plate 8 of the ski half 1; Fig. 1 is a longitudinal section of the cenrby means of elongated holes l3,.the two links ter portion, at the hinged joint, of the ski 10 are connected to vthe pin 14, arranged according to the rstexecution form. transversely of the box 2, on the other side Fig. 2 is the corresponding plan. of the hinge coupling 4-9,relative to the 65 igures 3 and 4 are cross sections through pivots 11. Y 1

3-3 and 4-4 respectively iii Fig. 1. The two ski halves 1 and 1 are locked in second execution form.`

i shoe.

e Fig. 5 lis a part section, similar to that their aligned position by a lug 15 fixed to given in Fig. 1, of the'ski according to the the plate 8 of the ski half 1, to which 'lug Fig. 6 is the corresponding plan, with the 16 of the box 2. In the end space thus 1 plate, on which the foot rests, removed. formed in the box 2 a bolt 17,l is lodged; a ig. 7 is a section through 7-7 in Fig. 6. spring 18 tends to engage the bolt in a notch Fig. 8 'is a plate to-be fastened under the of the lug 15, which bolt may be retracted Y against the action of the spring lby knurled 75 According to the invention, one of the button 19.

yhalves into which the ski is divided carries 'In the position shown in Figures 1 and 2,

a metal box'at its hinged end. This box emthe ski is mounted and its two halves l and 1 bracesthe upper face and sides of this ski are rigidly-held on the extension of the lonhalf and extends past its end in order to gitudinal axis of each other by the box 2 80 form a similar seat for the other ski half. which embraces their adjacent ends on three In the construction shown by Figures 1 3, sides.

1 andl are the two'longitudinal halves o f In order to fold the ski it is sufficient to the wooden ski; 2 is a metall box, C-shaped retract button 19 so that the bolt 17 is disen- 'f vin section, and attached upon the upper porgaged from the lug 15, which can now be sep- 85 fitted with strengthening ribs 5 and supplies interconnected by the links 10 alone.

tion ofthe ski halfl 1, to which it is secured arated from the box 2 together with the end in any convenient manner, as, for example, of the ski half 1. v

by pins 31. The box 2 projects past the end Owing to the longitudinal motion allowed of the ski half 1 which terminates at 34, by theelongated holes 13 of the links v10, the

where it is fitted with a cross member 'of contacting surfaces of the cross members 4 90 cylindrical form, 4, intended to constitute and 9 can beinoved somewhat apart from one half of the hinge coupling 4,9. each other and so the two halves 1 and 1 can The upper side of the box 2 is preferably be moved away from each other and remain the surfaceon which the foot rests. The box In the construction illustrated by Figures may be provided with any desired means for 5 to 7 a metal box 2 is still provi-ded, the box fastening it to the shoe; 1n the drawings two being fixed to the ski half 1 and its extended .side wings 6 are-shown for this purpose by portion serving to receive the end of the ski `way of example, each wing having screws 7 half l as well as a lug 15 fixed to 1 and 100 yond one extremity engaging a hole in the box 2 where it is held by a bolt 17.

Instead, the connection between 1 and 1 is e'dected by links arranged inside of the box 2, viz. by two pairs of links 20, 21 hinged to each other at 22; the opposite ends of the links 2() are hinged to the box 2 at 23, whereas the free ends of the links 21 are interconnected by a cross member 24 inserted with a clearance in a member 25 secured to the ski half 1.

The engagement between the halvesl and is further assisted by one or more pins 26 fixed at the end of one of them, for instance of 1, and adapted to enter the corresponding recesses provided in the adjacent end of the other half. y

In this construction the engagement of 1 and 1 by means of pins like 26, and the fiat form of the contacting surfaces of the two halves are rendered practicable by the longitudinal movement of which the two halves are susceptible relatively to each other due to the described connection.

In fact, once the bolt 17 has been released and the lug 15 has been removed from its seat, the ski half 1 can be moved axially away from the half 1 due to the clearance with which the cross member 24 is lodged in the member 25; after this the two halves 1 and 1 can be folded over each other.

In both constructions the box 2 .and the other metal parts should preferably be made out of a metal possessing at the same time the necessary strength and the maximum lightness, such as very strong aluminium alloy.

Having now particularly described and ascertained the nature of my said invention and in what-manner the same is to be performed, I declare that what I claim is 1. A collapsible ski, comprising two stick members, a metallic housing fastened to one end of one of'said `stick members, means for lodging one end of the vother stick member in said housing, and-means for retaining said stick members in longitudinal alignment.

2. A collapsible ski as claimed in claim 1, wherein the housing covers the stick members at the sides and top, and the top of which constitutes the foot rest.

3. A collapsible ski, comprising two stick members, a metallic housing fastened to one end of one of said stick members, means for lodging one end of the other stick member in said housing, a lug fixed to the top of said second stick member, a recess in said housing for receiving said lug, means attached to the housing for releasably engaging said lug to retain said stick members in longitudinal alignment.

Ll. A collapsible ski, comprising one stick member, a metallic housing fastened to said stick member and extending forwardly bethereof, .said stick memlindrical form, a secber terminating in a cy ond stick member, one of whose extremities said latter stick member is adapted to cooperate with the end of the iirst member to form a hinge joint, a pin extending across said housing rearwardly of said joint, link rods, with longitudinal slots at their rear, pivoted upon the front of each side of the second member, engaging said pin by means of said longitudinal slots therein, allowing a longitudinal movement between the stick members to uncouple the said hinge joint, and means for locking these members in position to prevent such uncoupling.

5. A collapsible ski, comprising a stick member, a metallic housing fastened to said member and extending forwardly beyond one extremity thereof, a link system contained in said housing, a second stick member movably engaging said link system, and means -forreleasably locking said stick members in longitudinal alignment.

6. A collapsible ski, member terminating in a square end, pins disposed in said end, ametallic housing fastened to said member and extending forwardly beyond said end, a link system contained in said housing, a second stick member movably engaging said link system, one extremity of terminating in a `square end, recesses in said end adapted to cooperate with the pins in the endrof the iirst stick member when the stick members are in longitudinal alignment, and means for releasably locking said stick members in said position.

7. A collapsible ski comprising two stick members, a metallic housing fastened to one end of one of said stick members, said end terminating in a shaped surface, means for seating one end of the other stick member in said housing, said latter end terminating in a second surface congruous to said iirst, and means for retaining said stick members in longitudinal alignment, with said surfaces abutting each other in said housing.

8. A collapsiblev ski comprising two stick members, a metallic housing fastened to one end of one of said stick members, said end terminating in a shaped surface, means for seating one end of the other stick member in said housing, said latter end terminating in a second surface congruous to said first, and connecting means between said housing and said second stick member for retaining said stick members in longitudinal alignment, with said surfaces abutting each other in said housing.

9. A collapsible ski comprising two stick members, a metallic housing fastened to one end of one of said stick members, said end shaped lateral surface, a cooperating lateral surface at one end of the second stick member, means for seating said end of said second stick member in said housing at the three lateral edges `of said end, and releasable locking means for retaining said stick members in longitudinal alignment terminating in a comprising a stick r lll with said second stick member seated in said housin l0. collapsible ski comprising two stick members, a metallic housing fastened to one end of one of said stick members, said end terminating in a shaped surface, a metallic fitting' With a surface corresponding to said shaped surface mounted at one end of the second stick member, means for connecting 1 said stick membersY With play, and means for seating said end of said second stick members in said housing with their surfaces abutting each other and retaining said stick members in longitudinal alignment. s Signed at Milan, Italy, this 6th day of September, 1929.

ENRICO SILVESTRI.

aoY 

